A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6685-00-831-5989
NSN 6610-01-179-8352
NSN 6650-01-132-6860
NSN 6240-01-512-1161
NSN 5915-00-880-2193
NSN 5925-00-889-4990
NSN 6650-01-341-1670
NSN 5835-01-116-2369
NSN 5999-00-286-6231
NSN 5975-01-469-6753
NSN 5895-00-518-1593
NSN 5915-01-650-4915